Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA

Oldest recorded age at locality: 164
Youngest recorded age at locality: 4

mindat Locality ID: 209460
mindat URL: http://www.mindat.org/loc-209460.html

Tectonic Settings:

Total number of sublocalities beneath "Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA": 110
Total number of bottom-level sublocalities: 92

Number of Child Localities: 3
Child Localities:
Calistoga District (Silverado District)
East Mayacmas District
Oakville District

Latitude: 38°33'44"N
Longitude: 122°27'41"W
Decimal Degree (lat, lon): 38.562222222222,-122.46138888889

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Acanthite	Amorphous	Arsenopyrite	Baryte	Botryogen	Calcite	Clay	Copper	Coquimbite	Corundum
Cristobalite	Epsomite	Gypsum	Kaolinite	Marcasite	Melanterite	Millerite	None	Not in a structural group	Pyrite
Quartz	Rocksalt	Römerite	Smectite-vermiculite	Sphalerite	Spinel	Starkeyite	Sulphur

Acanthite ()*	Arsenopyrite ()*	Baryte ()*	Botryogen ()*	Calcite ()*
Calomel ()*	Chlorargyrite ()*	Chromite ()*	Cinnabar ()*	Copper ()*
Coquimbite ()*	Crednerite ()*	Cristobalite ()*	Cuprite ()*	Dolomite ()*
Epsomite ()*	Fibroferrite ()*	Galena ()*	Gold ()*	Gypsum ()*
Hematite ()*	Kalinite ()*	Kaolinite ()*	Magnesiochromite ()*	Magnesite ()*
Marcasite ()*	Melanterite ()*	Mercury ()*	Metacinnabar ()*	Millerite ()*
Morenosite ()*	Opal ()*	Proustite ()*	Pyrargyrite ()*	Pyrite ()*
Quartz ()*	Rhodochrosite ()*	Römerite ()*	Rozenite ()*	Saponite ()*
Silver ()*	Sulphur ()*	Tiemannite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al As Au Ba C Ca Cl Cr Cu Fe H Hg K Mg Mn Na Ni O Pb S Sb Se Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Acanthite Amorphous Arsenopyrite Baryte Botryogen Calcite Clay Copper Coquimbite Corundum
Cristobalite Epsomite Gypsum Kaolinite Marcasite Melanterite Millerite None Not in a structural group Pyrite
Quartz Rocksalt Römerite Smectite-vermiculite Sphalerite Spinel Starkeyite Sulphur

43 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Acanthite ()*	Acanthite	Ag₂S			1	164998	2793
Arsenopyrite ()*	Arsenopyrite	FeAsS			1	164998	9052
Baryte ()*	Baryte	Ba(SO₄)			1	165086	11547
Botryogen ()*	Botryogen	MgFe³⁺(SO₄)₂(OH)·7H₂O			1	164998	45
Calcite ()*	Calcite	Ca(CO₃)			2	165033,165039	27770
Calomel ()*	None	HgCl			1	165040	91
Chlorargyrite ()*	Rocksalt	AgCl			1	164998	1382
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	164	164	16	165003,165027,165028,165029,165031,165032,165045,165048,165059,165061,165065,165069,165070,165071,165072,165073	3902
Cinnabar ()*	None	HgS			23	164993,164994,164995,165002,165003,165009,165010,165012,165013,165026,165030,165033,165036,165039,165040,165041,165055,165056,165066,165079,165086,165088,165091	2600
Copper ()*	Copper	Cu			1	165022	3846
Coquimbite ()*	Coquimbite	AlFe₃(SO₄)₆(H₂O)₁₂·6H₂O			1	165002	136
Crednerite ()*	None	CuMnO₂			2	164991,165008	35
Cristobalite ()*	Cristobalite	SiO₂			1	165079	453
Cuprite ()*	Not in a structural group	Cu₂O			1	165022	2970
Dolomite ()*	None	CaMg(CO₃)₂			1	165002	9895
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O			1	165040	484
Fibroferrite ()*	Not in a structural group	Fe³⁺(SO₄)(OH)·5H₂O			1	164991	107
Galena ()*	Rocksalt	PbS			1	164998	24243
Gold ()*	Copper	Au			1	164998	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O			1	164998	6890
Hematite ()*	Corundum	Fe₂O₃			1	165018	14640
Kalinite ()*	None	KAl(SO₄)₂·11H₂O			1	164986	54
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			3	165012,165039,165040	5591
Magnesiochromite ()*	Spinel	MgCr₂O₄			1	165081	311
Magnesite ()*	Calcite	Mg(CO₃)			1	165082	1487
Marcasite ()*	Marcasite	FeS₂			2	164998,165002	5674
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O			2	164998,165002	915
Mercury ()*	None	Hg			6	165002,165011,165026,165040,165086,165088	397
Metacinnabar ()*	Sphalerite	HgS			3	165002,165026,165040	255
Millerite ()*	Millerite	NiS			4	165003,165026,165040,165066	1066
Morenosite ()*	Epsomite	Ni(SO₄)·7H₂O			1	165066	84
Opal ()*	Amorphous	SiO₂·nH₂O			5	164995,165002,165010,165013,165087	2994
Proustite ()*	None	Ag₃AsS₃			1	164998	733
Pyrargyrite ()*	None	Ag₃SbS₃			2	164993,164998	1425
Pyrite ()*	Pyrite	FeS₂			9	165002,165012,165026,165033,165039,165040,165066,165086,165088	39462
Quartz ()*	Quartz	SiO₂			6	164988,164998,165033,165039,165086,165088	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)			1	165010	1711
Römerite ()*	Römerite	Fe²⁺Fe³⁺₂(SO₄)₄·14H₂O			1	165002	115
Rozenite ()*	Starkeyite	Fe²⁺(SO₄)·4H₂O			1	165002	293
Saponite ()*	Clay Smectite-vermiculite	(Ca,Na)_0.3(Mg,Fe)₃(Si,Al)₄O₁₀(OH)₂·4H₂O			1	165003	301
Silver ()*	Copper	Ag			1	164998	5186
Sulphur ()*	Sulphur	S			1	165040	2045
Tiemannite ()*	Sphalerite	HgSe			1	164994	83

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Sample Num	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00339	164	164	Middle Jurassic (161-168 Ma)		Cr	83705	Reeve Claims, Angwin, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Reeve Claims	Moiser et al. (2012)	USGSSIR2012_5157
NAVDAT-29545	8	6	7±1	29545		83662	Glass Mountain Deposit, St. Helena, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA		NAVDAT	NAVDAT
NAVDAT-29606	8	4	6±2	29606		83662	Glass Mountain Deposit, St. Helena, Calistoga District (Silverado District), Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA		NAVDAT	NAVDAT
podchrome-00335	164	164	Middle Jurassic (161-168 Ma)		Cr	83637	Astute Mine, Aetna Springs, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Astute	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00337	164	164	Middle Jurassic (161-168 Ma)		Cr	83656	Elder Claim, Pope Valley, East Mayacmas District, Mayacmas Mts (Mayacamas Mts), Napa Co., California, USA	Elder Claim	Moiser et al. (2012)	USGSSIR2012_5157

All locality data graciously provided by mindat.org

All age data...